1125341243 has 4 divisors (see below), whose sum is σ = 1211905968. Its totient is φ = 1038776520.

The previous prime is 1125341233. The next prime is 1125341341. The reversal of 1125341243 is 3421435211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125341243 - 2¹⁴ = 1125324859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125341233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43282343 + ... + 43282368.

It is an arithmetic number, because the mean of its divisors is an integer number (302976492).

Almost surely, 2^1125341243 is an apocalyptic number.

1125341243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1125341243 is a deficient number, since it is larger than the sum of its proper divisors (86564725).

1125341243 is an equidigital number, since it uses as much as digits as its factorization.

1125341243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86564724.

The product of its digits is 2880, while the sum is 26.

The square root of 1125341243 is about 33546.1062271018. The cubic root of 1125341243 is about 1040.1470585315.

Adding to 1125341243 its reverse (3421435211), we get a palindrome (4546776454).

The spelling of 1125341243 in words is "one billion, one hundred twenty-five million, three hundred forty-one thousand, two hundred forty-three".